Looking at the general trend of history, it is not only prosperous and declining, declining to rule, after the Tang Dynasty, the richest and strongest in Chinese history, is the chaotic Five Dynasties and Ten Kingdoms period. During this period, the various countries and dynasties were the ones who sang and appeared on the stage, and they were as chaotic as a marquee. Further north, there is a dynasty that is also constantly conquering, it is the Great Liao, a country in the southern Central Plains that has entered the feudal society for about 1500 years or so.
In 916, after running the Khitan for many years, Yelü Abaoji took advantage of the decline of the late Tang Dynasty to gradually encroach on the territory of the Tang Dynasty and plunder the residents of the states of the Late Tang Dynasty, and finally established a unified Khitan state. At this time, the Khitan state was still slavery, and the rulers were elected by various tribes. With the help of Han officials and the model of the Han state, Yelü Abaoji abolished the electoral system, established the hereditary system of imperial power, built the imperial capital, and created the Khitan script, and his honorific title was Liao Taizu.
After the death of Liao Taizu, Emperor Taizong of Liao succeeded to the throne. Emperor Taizong of Liao continued to plunder southward, destroying the Later Jin Dynasty in 947 and officially establishing the state as the Great Liao. At this point, the historical Liao can be regarded as officially on the field. Emperor Taizong of Liao was followed by Emperor Muzong of Liao, Emperor Jingzong of Liao, and Emperor Shengzong of Liao. Emperor Shengzong of Liao reigned for 49 years, and was the longest-reigning emperor of the Liao State, as well as the most accomplished emperor. During his reign, he implemented measures to weaken slavery in the country and established feudal rule. He loved to read "Zhenguan Politicians" and learn the methods of han dynasty rule, and the Liao state reached its heyday under his rule.
Liao Shengzong was followed by LiaoXingzong. Emperor Xingzong of Liao was the eldest son of Emperor Shengzong of Liao, and his mother was Concubine Xiao Yunjin, but he was raised by Emperor Shengzong of Liao's empress Qi Tianhou. Therefore, Liao Xingzong and Qi Tianhou had a deep affection, but they were relatively distant from their birth mother. After Emperor Xingzong of Liao succeeded to the throne, his biological mother, Princess Yuan, became regent, first establishing herself as empress dowager, and then plotting to execute Qi Tianhou. A series of moves by the Yuan Concubine made his son Liao Xingzong more and more dissatisfied, and the relationship between the two became more and more tense. Because the relationship with her eldest son was getting worse and worse, and the two were relatively estranged, coupled with the increasing desire for power of the Yuan Concubines, she was worried that after Emperor Xingzong of Liao's pro-government, she would lose her power, so she planned to depose Emperor Liaoxingzong and establish her younger son Yelü Chongyuan as emperor.
Yelü Chongyuan did not have any desire for power at that time, and did not agree with his mother and uncle's conspiracy to depose his brother. So Yelü Chongyuan ran to find his emperor's brother and told the emperor all about his mother and uncle's preparation to depose him and establish himself as emperor. Liao Xingzong was very angry when he heard this, and at the same time he was very grateful that his brother could be so good to him. So Emperor Xingzong of Liao used the plan to get rid of his uncle and depose the empress dowager. At the same time, in order to thank his brother, he gave his brother all the rewards, honors and privileges that he could give, and named Yelü Chongyuan the emperor's brother-in-law, and this title of "Imperial Brother" is also unique in the history of our country.
Ironically, however, Yelü Chung-won ended up in disgrace because of rebellion.
Liaoxingzong was followed by Liao Daozong. As soon as Emperor Daozong of Liao came to power, in order to appease Yelü Chongyuan, he was made the Emperor's Uncle and the Grand Marshal of the Terracotta Army. However, because Yelü Chongyuan's son Yelü Nerugu was too ambitious and wanted to become emperor, he instigated his father to rebel. Coupled with the fact that during the reign of Emperor Xingzong of Liao, he drank wine with Yelü Chongyuan, and when he was drunk, he said that he would pass the throne to his good brother after a hundred years, but in the end he passed the throne to his son, which also made Yelü Chongyuan feel bad. So, Together with his son Yerushalayim, Jeroboam rebelled. In the end, he was suppressed by Emperor Daozong of Liao, and Yelü Chongyuan committed suicide in defeat.